Thank you very much Thomas, really.
Enrico
Enrico Mioso
Mobile Phone Number: +393807096934 ( +Telegram :) )
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On Wed, 11 Jan 2017, Thomas Gleixner wrote:
Date: Wed, 11 Jan 2017 10:16:10
From: Thomas Gleixner <[email protected]>
To: Enrico Mioso <[email protected]>
Cc: [email protected],
Boris Ostrovsky <[email protected]>,
Rasmus Villemoes <[email protected]>,
Peter Zijlstra <[email protected]>,
Anna-Maria Gleixner <[email protected]>,
Ingo Molnar <[email protected]>,
Sebastian Andrzej Siewior <[email protected]>
Subject: Re: CPU Hotplugging disabled,
still cpuhp/%d threads running in my 32-bit system
On Tue, 10 Jan 2017, Enrico Mioso wrote:
Hello guys.
I disabled CPU hotplugging in my .config: still I can see what follows in the
process list.
11 ? S 0:00 [cpuhp/0]
12 ? S 0:00 [cpuhp/1]
And from what I can see in kernel/cpu.c:574, this is related to CPU
hotplugging.
Is this normal? And, out of curiosity, why?
Yes. We need the threads for bringing up the CPUs and for modules and other
functionality to set up per cpu related things. The thread makes sure that
the code runs on the CPUs and handles the functionality related to
install/remove of hotplug callbacks.
Thanks,
tglx
